Fire it up.. hold the brake put it in
gear and open the throttle. . In other
words load the engine down.. see if it
stutters or misses.. I'm thinking you
got a fuel starvation issue.. with
ought proper diagnostics this may be
difficult to diagnose.. what color
were the plugs? Black? Or amber? Or
white? Keep in mind black is rich.
Amber optimal more white to lean.

Don't just throw parts at er boys..
let's diagnose the issue it's cheaper.
Process of elimination.. u may not
have needed the cap and rotor. Or
plugs.. there's a 100 bucks gone and
u still have the issue. Right?

Disconnect your coolant temp
sensor .. this will put the pcm into
limp mode. It will trigger open loop
operation or cold start up procedure
also it will shorten the injector pulse
width causing a rich mixture. Repeat
my first test . Load the car down in
gear and see if u get fuel cut..
Second does it hesitate when u open
the throttle or closed. Open is a sign
of under fueling..example.... if your
car is running rich ideally when u
open the throttle it should smooth
out as u allow more air in.. if it's
under fueling then it will run ok at
idle but as soon as u allow air in it
will trigger a lean mix. Then your
pcm will try to compensate and shit
gets bad..
I usually just watch the Mas tps and
up stream o2 on an oscilloscope. .
But you don't have my equipment.

Also and this is not a fix.. nvr use
this as your fix.. only a test.. take a
pair of needle nose vice grips snug
them onto your return fuel line. Don't
pinch the line . Just close it a bit.
This will help diagnose a faulty fuel
pressure regulator. It will raise the
fuel pressure in the rail.

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